Throttling device



Patented Jan. 6, 1925.

UNITED stares:

ATE

EMIL KZlGI, 0F WINTERTHUR, SWITZERLAND, ASSIGNOR To SULZER-FRERES so'cIETE I ANONYME, on WINTERTHUR, SWITZERLAND, A coRronA'rIow or SWITZERLAND;

' THBOTTLING DEVICE.

Application filed. August 7, 1923. Serial No. 656,190;

To all whom, it may concerm Be 1t known that I, EMILKAGI, a citizen of Switzerland, residing at VVinterthur,

Switzerland, have invented certain new and useful Improvements in. or Relating to Throttling Devices, of which the following is a specification.

This invention relates to float-controlled throttling devices for the regulation of liquid flow, and has for its object to provide in a convenient form means whereby the liquid delivery from a reservoir or tank is automatically controlled in accordance with the amount of liquid supplied to the tank in unit time.

The throttling device according to the present invention comprises two tubular rotary slides which are disposed one within the other and are provided with ports, and a float'to which the slides are connected by means of links, the arrangement being such that when the liquid level, and therefore also the float, rises or falls the slides are rotated relatively to one another in such a manner that the flow allowed through the slide ports is increased or decreased respectively. The connection between the slides and the float is preferably in the form of a parallelogram linkage, of which the joint opposite the slides moves in a vertical guide. The float may be formed annular.

A construction according to the invention is illustrated by way of example in the accompanying drawings, and will be described primarily with'reference to the application of the device to a refrigerator.

Fig. 1 is a vertical section through the collecting tank of a refrigerator showing the improved float controlled device applied thereto;

Fig. 2 is a horizontal section taken on the line 22 of Fig. 1; 7

Figs. 3, 4: and 5 are detail sectional views showing various positions of the rotary slides; and

Figs. 6, 7 and 8 illustrate the positions assumed by the ports in the slides when the slides are in the positions of Figs. 3, l and 5 respectively.

a is a collecting tank connected with the condenser by a tube 6 and by opening a with the vaporizer of a refrigerator (not shown). From this collecting tank the refrigerating liquid, supplied by the condenser, is con,-

ducted bymeansof, an adjustable throttle device controlled by the float to; the vaporizer in such quantitiesthat the liquid:

level in the tank a varies only between predeterminedlimits. The throttle device consistsjof two tubular rotary'slides e and 7 which are provided with the openings g and g respectively. These openings are directed downwards and open into the tube leading to the vaporizer. Each of the tubular slides e and f is flexibly connected with the float by means of a lever h and a link 2'. These slides are rotated relatively to one another by the float which changes its position according to the liquid level in the tank in such a manner that the cross-section of flow allowed by the ports or openings 9 and 9 increases with rising liquid level and decreases with falling liquid level. Figs. 3 and 6, 4 and 7, and 5 and 8 show the positions of the rotary slides and the corresponding positions of the openings in the highest, medium and lowest positions of the float. In order to keep the float in a central position the links it are connected by k to form a parallelogram linkage, of which the joint opposite the slides moves in a vertical guide Z. Counterweights mare connected to the slides e and; f for the purpose of assisting the adjustment of the slides when the liquid level falls. A throttling device formed in this manner may be employed for purposes other than for refrigerators.

I claim: 1. In a float-controlled throttling device for the regulation of liquid flow, the combination with two tubular rotary slides dis posed one within the other, and provided with ports, of a float to which the slides-are connected by means of a parallelogram linkage having the joint opposite. to the slides moving in a vertical guide, the arrangement being such that when theliquid level, and therefore alsothe float, rises or falls the slides are rotated relatively to one another in such a manner that the flow allowed through the slide'ports is increased or decreased respectively.

2. In a float-controlled throttling device for the regulation of liquid flow, the combination with two tubular rotary slides disposed one within the other, and provided with ports, of an annular float to whlchthe slides are connected by means of links, the

' another in such a manner that the flow allowed through the slide ports is increased or decreased respectively. g

8. In a float-controlled throttling device for the regulation of liquid flow, the combination with two tubular rotary slides disposed one Within the other, and provided with ports, of an annular float towhich the slides are connected by means of a paral-.,

EMIL KAGL Witnesses A. F. GAHooN, jlelograni linkage having the joint opposite AUGUs'r QUIGG. 

